Gluing-clamp.



E. BARKER.

. GLUING CLAMP.

APPLICATION FILED APB. 11, 1907- No. 878,491. PATENTED FEB. 11, 1908.

2 SHEETS-SHEET 1.

mull

------------------------------------------ .ii-mfimrm N TON,

A T7 01cm; 1 5

PATENTED' FEB. 11, 1908.

E. BARKER.

GLUING CLAMP.

APPLICATION FILED APB. 11.1907.

2 SHEETS-SHEET 2'.

mum lllllllll i EUGENE BARKER, OF BATAVIA, NEW YORK.

GLUING-CLAMP.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed April 11. 1907- Serial No. 367-689.

To all whom it may concern: I

Be it known that I, EUGENE BARKER, a citizen of the United States,residing at Batavia, in the county of Genesee and State of New York,have invented a new and useful Gluing-Clamp, of which the following is aspecification.

This invention relates to gluing clamps and its object is to providemeans'whereby an object having an irregular or an inclined surface canbe firmly clamped upon another ob ject to which it is to be glued.

Heretofore it has been necessary to employ blocks and other spacingmeans between one of the aws of a clamp and the irregular or inclinedsurface of the object to be clamped and these spacing devices have beenfound objectionable not only because of the time necessary to adjustthem but also because it is practically impossible to get them of theproper proportions so that an even pressure will be exerted by the jawagainst the object to be clamped. It has also been impossible to equallydistribute pressure upon the jaw from its actuating means and thereforewhen an object is placed against the jaw and close to the bar of theclamp it does not receive the same degree of pressure which it wouldreceive if placed close to the actuating means or adjacent the outer endof the jaw.

It is the object of the present invention to provide a jaw having meanswhereby the same will clamp as efliciently upon an object close to thebar as upon an object adjacent the outer end of the jaw.

It is also the object of the invention to provide means whereby the jawcan be moved to various angles and locked in any position to which itmay be adjusted so as to evenly distribute pressure upon a clampedobject of any contour and securely hold said object againstdisplacement.

WVith these and other objects in view the invention consists of certainnovel features of construction and combinations of parts which will behereinafter more fully described and pointed out in the claims.

In the accompanying drawing is shown the preferred form of theinvention.

In said drawings: Figure 1 is an elevation of the jawsnf a clampembodying the present improvements, only a portion of the bar beingshown; Fig. 2 is an elevation of the clamp and looking in the directionof the arrow in Fig. 1, a portion of the guide arm being broken away;Fig. 8 is a detail view of the guide and supporting member of the clamp;Fig. 4 is a detail view of the aw; Fig. 5 is an elevation of a modifiedform of clamp; and

Fig. 6 is a plan View of the clamp shown in Referring to the figures bycharacters of reference, 1 designates the bar of the clamp,

the same being preferably provided with rack teeth 2 formed of atransversely corrugated from and formed with an integral upstanding web7 from which project arms 8. Guide openings 9 extend through the arm 6at o posite sides of the web 7 and slidably mounted within each of these0 enings is a push bar 10 having a rounded en argcd head 11 at its lowerend. The heads of the two push bars project into sockets 12 formedwithin a jaw 13 and these heads are loosely secured within the socketsby means of retaining screws 14 or in any other preferred manner. Ihesescrews permit the jaw 13 to change its angle to the push bars 10. It isof course to be understood that the heads 11 are of the same or lessdiameter than the push bars 10 so that said bars can be inserted intothe arm 6.

Extending from each of the arms 8 is a stud 15 having a ratchet wheel 16at the free or outer end thereof and pivotally mounted on each of thesestuds and between the ratchet wheel and the arms is a cam 17 formed witha flange 18 designed to work within a groove 19 formed in the enlargedupper end of one of the push bars 10. A handle 20 extends from each camand fulcrumed therein is a locking lever 21 having a head 22 designed toengage the ratchet wheel. This head is held normally in engagement withthe ratchet wheel by means of a spring 23. One end of the lever 21extends beyond the handle as shown at 24 and forms a shoulder 25 whichconstitutes an abutment for an adjusting screw 26 mounted within an ear27 extending in wardly from the flange 18. Lever 21 is fulcrumed upon alug or projection 28 which projects loosely into a recess 29 in thelever.

It will be obvious by referring to the draw ings in connection with theforegoing dethe same hand grasping the handle 20. It will be seen thatas either end of the jaw 13 can be adjusted toward the jaw 4 said jaw 13can bemade to bear equally well upon a surface disposed perpendicularlyto the bar 1 or inclined thereto. Also if a small object is placedbetween the jaws and close to the bar 1 the inner end of jaw 13 willbear as firmly and tightly thereagainst as if said object should bepositioned between the outer ends of the jaws. The lever 21 has a slightlongitudinal movement with respect to its fulcrum 28 so that should thehead 22 be slightly removed from one of the teeth of the ratchet 16 whenthe proper movement of the cam has been accomplished said head can beshifted against the tooth by turning the screw 26 against shoulder 25.The cam will therefore be held absolutely against movement because alllost motion will thus be taken up and a very minute adjustment of thejaws against the work be secured.

In some work it is desirable to have the jaw rest upon two fiat surfacesdisposed in different planes and in order that this may be accomplishedthe construction shown in Figs. 5 and 6 has been devised. In thisconstruction the jaw is made up of two separate sections instead of onesection as shown in Figs. 1 and 2. It will be noted that the collar 30which is secured to bar 31 has an arm 32 extending therefrom and formedwith an inner upwardly extending arm 33 and an outer upwardly extendingarm 34. Guide openings 35 are formed within the arm 32 to receive pushbars 36 and each of these push bars is connected by a ball and socketjoint 37 with a jaw 38 consisting of separate sections one section beingattached to each push bar. The upper ends of the push bars engage cams39 which are similar to the cams hereinbefore described and arepivotally mounted upon studs 40 extending from the arms 33 and 34. Eachof these studs has a ratchet wheel 41 thereon designed to be engaged bya spring pressed This movement of the lever can be produced by lockinglever 42. It will be noted that the two earns 39 are disposed in planesextending longitudinally of the jaws of the clamp whereas the cams 17are disposed in planes extending at right angles to the jaws. It is tobe understood that either arrangement of the cams may be used witheither construction of clamp.

It is thought that the operation of the construction shown in Fig. 5will be apparent. Either section of the jaw 38 can be locked at adesired elevation so that objects having their surfaces in differentplanes can be subjected to the same pressure at the same time.

It will be understood that in both constructions which have beendescribed two separately movable cams are utilized for operating eachclamping mechanism, although in one instance said mechanism includes buta one-piece jaw, whereas in the second construction the jaw is made upof two parts. It is to be understood therefore that by the term jaw itis intended to cover both the single jaw shown in Figs. land 4 and thetwo-part jaw disclosed in Fig. 5.

What is claimed is:

1. The combination with a bar, a support- 1 ing arm outstandingtherefrom, and upstanding arms upon the supporting arms; of push barsguided within and extending through the supporting arm, a jaw havingspaced sockets,

said push bars being pivotally mounted with I in the respective sockets,actuating cams pivotally connected to the upstanding arms, said camsengaging and disposed to actuate the push bars in either direction, saidcams being disposed in parallel planes.

2. The combination with a bar, and a tiltable jaw movable longitudinallyof the bar; of,an-arm outstanding from the bar, push bars slidablymounted within the arm and pivotally connected to opposite portions ofthe jaw, and means carried by the arm for independently actuating thepush bars in either direction to shift the jaw.

3. The combination with a support; of a cam carried thereby, a ratchetfixedly secured adjacent the cam, a locking lever carried by the cam anddis osed to engage the ratchet, means carried y the cam for adjustingthe locking lever upon its fulcrum, and a jaw connected to and disposedto be actuated by the cam.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two witnesses.

EUGENE BARKER.

Witnesses:

E. HUME TALBERT, HERBERT D. LAWSON.

